Does anybody know if there is a kit on the market with relacement o rings specificially for vaping/rda's/rta's. Most of the o rings I've encountered are much smaller (thinner?) than your standard plumbing o rings. Just thought it would be helpful if there is a good assorted kit or at least a good description of how one goes about sizing an o ring (diameter vs thickness of the rubber vs whatever other variable I don't know about!)
Thank you!

Thank you!